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authorLibravatar Phillip Wood <phillip.wood@dunelm.org.uk>2019-01-29 18:43:27 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2019-01-29 13:34:51 -0800
commitc762aada1ab3a2c428c462e0e6964d9f37107da7 (patch)
treebbebee0fe64928af8bf20968abec2bbb32ecc016
parentGit 2.20.1 (diff)
downloadtgif-c762aada1ab3a2c428c462e0e6964d9f37107da7.tar.xz
rebase -x: sanity check command
If the user gives an empty argument to --exec then git creates a todo list that it cannot parse. The rebase starts to run before erroring out with error: missing arguments for exec error: invalid line 2: exec You can fix this with 'git rebase --edit-todo' and then run 'git rebase --continue'. Or you can abort the rebase with 'git rebase --abort'. Instead check for empty commands before starting the rebase. Also check that the command does not contain any newlines as the todo-list format is unable to cope with multiline commands. Note that this changes the behavior, before this change one could do git rebase --exec='echo one exec echo two' and it would insert two exec lines in the todo list, now it will error out. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/rebase.c17
-rwxr-xr-xt/t3404-rebase-interactive.sh19
2 files changed, 36 insertions, 0 deletions
diff --git a/builtin/rebase.c b/builtin/rebase.c
index b5c99ec10c..f9f231a5f0 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -793,6 +793,19 @@ static void set_reflog_action(struct rebase_options *options)
strbuf_release(&buf);
}
+static int check_exec_cmd(const char *cmd)
+{
+ if (strchr(cmd, '\n'))
+ return error(_("exec commands cannot contain newlines"));
+
+ /* Does the command consist purely of whitespace? */
+ if (!cmd[strspn(cmd, " \t\r\f\v")])
+ return error(_("empty exec command"));
+
+ return 0;
+}
+
+
int cmd_rebase(int argc, const char **argv, const char *prefix)
{
struct rebase_options options = {
@@ -1130,6 +1143,10 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
}
}
+ for (i = 0; i < exec.nr; i++)
+ if (check_exec_cmd(exec.items[i].string))
+ exit(1);
+
if (!(options.flags & REBASE_NO_QUIET))
argv_array_push(&options.git_am_opts, "-q");
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 7a440e08d8..c98f64eb2d 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -147,6 +147,25 @@ test_expect_success 'rebase -i with the exec command checks tree cleanness' '
git rebase --continue
'
+test_expect_success 'rebase -x with empty command fails' '
+ test_when_finished "git rebase --abort ||:" &&
+ test_must_fail git rebase -x "" @ 2>actual &&
+ test_write_lines "error: empty exec command" >expected &&
+ test_i18ncmp expected actual &&
+ test_must_fail git rebase -x " " @ 2>actual &&
+ test_i18ncmp expected actual
+'
+
+LF='
+'
+test_expect_success 'rebase -x with newline in command fails' '
+ test_when_finished "git rebase --abort ||:" &&
+ test_must_fail git rebase -x "a${LF}b" @ 2>actual &&
+ test_write_lines "error: exec commands cannot contain newlines" \
+ >expected &&
+ test_i18ncmp expected actual
+'
+
test_expect_success 'rebase -i with exec of inexistent command' '
git checkout master &&
test_when_finished "git rebase --abort" &&